<template>
  <div class="echarts">
    <div :class="className" :style="{height:height,width:width}" ref="myEchart"></div>
  </div>
</template>
<script>
  import echarts from "echarts";
  //   import '../../node_modules/echarts/map/js/world.js'
  import '../../../node_modules/echarts/map/js/china.js' // 引入中国地图数据
  export default {
    name: "HotMap",
    props: {
      className: {
        type: String,
        default: 'chart'
      },
      width: {
        type: String,
        default: '100%'
      },
      height: {
        type: String,
        default: '100px'
      },
      chartData: {}
    },
    data() {
      return {
        chart: null
      };
    },
    mounted() {
      this.chinaConfigure();
    },
    beforeDestroy() {
      if (!this.chart) {
        return;
      }
      this.chart.dispose();
      this.chart = null;
    },
    methods: {
      chinaConfigure() {
        let myChart = echarts.init(this.$refs.myEchart); //这里是为了获得容器所在位置
        window.onresize = myChart.resize;

        const geoCoordMap = {
          "海门": [121.15, 31.89],
          "鄂尔多斯": [109.781327, 39.608266],
          "招远": [120.38, 37.35],
          "舟山": [122.207216, 29.985295],
          "齐齐哈尔": [123.97, 47.33],
          "盐城": [120.13, 33.38],
          "赤峰": [118.87, 42.28],
          "青岛": [120.33, 36.07],
          "乳山": [121.52, 36.89],
          "金昌": [102.188043, 38.520089],
          "泉州": [118.58, 24.93],
          "莱西": [120.53, 36.86],
          "日照": [119.46, 35.42],
          "胶南": [119.97, 35.88],
          "南通": [121.05, 32.08],
          "拉萨": [91.11, 29.97],
          "云浮": [112.02, 22.93],
          "梅州": [116.1, 24.55],
          "文登": [122.05, 37.2],
          "上海": [121.48, 31.22],
          "攀枝花": [101.718637, 26.582347],
          "威海": [122.1, 37.5],
          "承德": [117.93, 40.97],
          "厦门": [118.1, 24.46],
          "汕尾": [115.375279, 22.786211],
          "潮州": [116.63, 23.68],
          "丹东": [124.37, 40.13],
          "太仓": [121.1, 31.45],
          "曲靖": [103.79, 25.51],
          "烟台": [121.39, 37.52],
          "福州": [119.3, 26.08],
          "瓦房店": [121.979603, 39.627114],
          "即墨": [120.45, 36.38],
          "抚顺": [123.97, 41.97],
          "玉溪": [102.52, 24.35],
          "张家口": [114.87, 40.82],
          "阳泉": [113.57, 37.85],
          "莱州": [119.942327, 37.177017],
          "湖州": [120.1, 30.86],
          "汕头": [116.69, 23.39],
          "昆山": [120.95, 31.39],
          "宁波": [121.56, 29.86],
          "湛江": [110.359377, 21.270708],
          "揭阳": [116.35, 23.55],
          "荣成": [122.41, 37.16],
          "连云港": [119.16, 34.59],
          "葫芦岛": [120.836932, 40.711052],
          "常熟": [120.74, 31.64],
          "东莞": [113.75, 23.04],
          "河源": [114.68, 23.73],
          "淮安": [119.15, 33.5],
          "泰州": [119.9, 32.49],
          "南宁": [108.33, 22.84],
          "营口": [122.18, 40.65],
          "惠州": [114.4, 23.09],
          "江阴": [120.26, 31.91],
          "蓬莱": [120.75, 37.8],
          "韶关": [113.62, 24.84],
          "嘉峪关": [98.289152, 39.77313],
          "广州": [113.23, 23.16],
          "延安": [109.47, 36.6],
          "太原": [112.53, 37.87],
          "清远": [113.01, 23.7],
          "中山": [113.38, 22.52],
          "昆明": [102.73, 25.04],
          "寿光": [118.73, 36.86],
          "盘锦": [122.070714, 41.119997],
          "长治": [113.08, 36.18],
          "深圳": [114.07, 22.62],
          "珠海": [113.52, 22.3],
          "宿迁": [118.3, 33.96],
          "咸阳": [108.72, 34.36],
          "铜川": [109.11, 35.09],
          "平度": [119.97, 36.77],
          "佛山": [113.11, 23.05],
          "海口": [110.35, 20.02],
          "江门": [113.06, 22.61],
          "章丘": [117.53, 36.72],
          "肇庆": [112.44, 23.05],
          "大连": [121.62, 38.92],
          "临汾": [111.5, 36.08],
          "吴江": [120.63, 31.16],
          "石嘴山": [106.39, 39.04],
          "沈阳": [123.38, 41.8],
          "苏州": [120.62, 31.32],
          "茂名": [110.88, 21.68],
          "嘉兴": [120.76, 30.77],
          "长春": [125.35, 43.88],
          "胶州": [120.03336, 36.264622],
          "银川": [106.27, 38.47],
          "张家港": [120.555821, 31.875428],
          "三门峡": [111.19, 34.76],
          "锦州": [121.15, 41.13],
          "南昌": [115.89, 28.68],
          "柳州": [109.4, 24.33],
          "三亚": [109.511909, 18.252847],
          "自贡": [104.778442, 29.33903],
          "吉林": [126.57, 43.87],
          "阳江": [111.95, 21.85],
          "泸州": [105.39, 28.91],
          "西宁": [101.74, 36.56],
          "宜宾": [104.56, 29.77],
          "呼和浩特": [111.65, 40.82],
          "成都": [104.06, 30.67],
          "大同": [113.3, 40.12],
          "镇江": [119.44, 32.2],
          "桂林": [110.28, 25.29],
          "张家界": [110.479191, 29.117096],
          "宜兴": [119.82, 31.36],
          "北海": [109.12, 21.49],
          "西安": [108.95, 34.27],
          "金坛": [119.56, 31.74],
          "东营": [118.49, 37.46],
          "牡丹江": [129.58, 44.6],
          "遵义": [106.9, 27.7],
          "绍兴": [120.58, 30.01],
          "扬州": [119.42, 32.39],
          "常州": [119.95, 31.79],
          "潍坊": [119.1, 36.62],
          "重庆": [106.54, 29.59],
          "台州": [121.420757, 28.656386],
          "南京": [118.78, 32.04],
          "滨州": [118.03, 37.36],
          "贵阳": [106.71, 26.57],
          "无锡": [120.29, 31.59],
          "本溪": [123.73, 41.3],
          "克拉玛依": [84.77, 45.59],
          "渭南": [109.5, 34.52],
          "马鞍山": [118.48, 31.56],
          "宝鸡": [107.15, 34.38],
          "焦作": [113.21, 35.24],
          "句容": [119.16, 31.95],
          "北京": [116.46, 39.92],
          "徐州": [117.2, 34.26],
          "衡水": [115.72, 37.72],
          "包头": [110, 40.58],
          "绵阳": [104.73, 31.48],
          "乌鲁木齐": [87.68, 43.77],
          "枣庄": [117.57, 34.86],
          "杭州": [120.19, 30.26],
          "淄博": [118.05, 36.78],
          "鞍山": [122.85, 41.12],
          "溧阳": [119.48, 31.43],
          "库尔勒": [86.06, 41.68],
          "安阳": [114.35, 36.1],
          "开封": [114.35, 34.79],
          "济南": [117, 36.65],
          "德阳": [104.37, 31.13],
          "温州": [120.65, 28.01],
          "九江": [115.97, 29.71],
          "邯郸": [114.47, 36.6],
          "临安": [119.72, 30.23],
          "兰州": [103.73, 36.03],
          "沧州": [116.83, 38.33],
          "临沂": [118.35, 35.05],
          "南充": [106.110698, 30.837793],
          "天津": [117.2, 39.13],
          "富阳": [119.95, 30.07],
          "泰安": [117.13, 36.18],
          "诸暨": [120.23, 29.71],
          "郑州": [113.65, 34.76],
          "哈尔滨": [126.63, 45.75],
          "聊城": [115.97, 36.45],
          "芜湖": [118.38, 31.33],
          "唐山": [118.02, 39.63],
          "平顶山": [113.29, 33.75],
          "邢台": [114.48, 37.05],
          "德州": [116.29, 37.45],
          "济宁": [116.59, 35.38],
          "荆州": [112.239741, 30.335165],
          "宜昌": [111.3, 30.7],
          "义乌": [120.06, 29.32],
          "丽水": [119.92, 28.45],
          "洛阳": [112.44, 34.7],
          "秦皇岛": [119.57, 39.95],
          "株洲": [113.16, 27.83],
          "石家庄": [114.48, 38.03],
          "莱芜": [117.67, 36.19],
          "常德": [111.69, 29.05],
          "保定": [115.48, 38.85],
          "湘潭": [112.91, 27.87],
          "金华": [119.64, 29.12],
          "岳阳": [113.09, 29.37],
          "长沙": [113, 28.21],
          "衢州": [118.88, 28.97],
          "廊坊": [116.7, 39.53],
          "菏泽": [115.480656, 35.23375],
          "合肥": [117.27, 31.86],
          "武汉": [114.31, 30.52],
          "大庆": [125.03, 46.58]
        };//地图坐标数据
        const valueDatas=[
          {name: "海门", value: 9},
          {name: "鄂尔多斯", value: 12},
          {name: "招远", value: 12},
          {name: "舟山", value: 12},
          {name: "齐齐哈尔", value: 14},
          {name: "盐城", value: 15},
          {name: "赤峰", value: 16},
          {name: "青岛", value: 18},
          {name: "乳山", value: 18},
          {name: "金昌", value: 19},
          {name: "泉州", value: 21},
          {name: "莱西", value: 21},
          {name: "日照", value: 21},
          {name: "胶南", value: 22},
          {name: "南通", value: 23},
          {name: "拉萨", value: 24},
          {name: "云浮", value: 24},
          {name: "梅州", value: 25},
          {name: "文登", value: 25},
          {name: "上海", value: 25},
          {name: "攀枝花", value: 25},
          {name: "威海", value: 25},
          {name: "承德", value: 25},
          {name: "厦门", value: 26},
          {name: "汕尾", value: 26},
          {name: "潮州", value: 26},
          {name: "丹东", value: 27},
          {name: "太仓", value: 27},
          {name: "曲靖", value: 27},
          {name: "烟台", value: 28},
          {name: "福州", value: 29},
          {name: "瓦房店", value: 30},
          {name: "即墨", value: 30},
          {name: "抚顺", value: 31},
          {name: "玉溪", value: 31},
          {name: "张家口", value: 31},
          {name: "阳泉", value: 31},
          {name: "莱州", value: 32},
          {name: "湖州", value: 32},
          {name: "汕头", value: 32},
          {name: "昆山", value: 33},
          {name: "宁波", value: 33},
          {name: "湛江", value: 33},
          {name: "揭阳", value: 34},
          {name: "荣成", value: 34},
          {name: "连云港", value: 35},
          {name: "葫芦岛", value: 35},
          {name: "常熟", value: 36},
          {name: "东莞", value: 36},
          {name: "河源", value: 36},
          {name: "淮安", value: 36},
          {name: "泰州", value: 36},
          {name: "南宁", value: 37},
          {name: "营口", value: 37},
          {name: "惠州", value: 37},
          {name: "江阴", value: 37},
          {name: "蓬莱", value: 37},
          {name: "韶关", value: 38},
          {name: "嘉峪关", value: 38},
          {name: "广州", value: 38},
          {name: "延安", value: 38},
          {name: "太原", value: 39},
          {name: "清远", value: 39},
          {name: "中山", value: 39},
          {name: "昆明", value: 39},
          {name: "寿光", value: 40},
          {name: "盘锦", value: 40},
          {name: "长治", value: 41},
          {name: "深圳", value: 41},
          {name: "珠海", value: 42},
          {name: "宿迁", value: 43},
          {name: "咸阳", value: 43},
          {name: "铜川", value: 44},
          {name: "平度", value: 44},
          {name: "佛山", value: 44},
          {name: "海口", value: 44},
          {name: "江门", value: 45},
          {name: "章丘", value: 45},
          {name: "肇庆", value: 46},
          {name: "大连", value: 47},
          {name: "临汾", value: 47},
          {name: "吴江", value: 47},
          {name: "石嘴山", value: 49},
          {name: "沈阳", value: 50},
          {name: "苏州", value: 50},
          {name: "茂名", value: 50},
          {name: "嘉兴", value: 51},
          {name: "长春", value: 51},
          {name: "胶州", value: 52},
          {name: "银川", value: 52},
          {name: "张家港", value: 52},
          {name: "三门峡", value: 53},
          {name: "锦州", value: 54},
          {name: "南昌", value: 54},
          {name: "柳州", value: 54},
          {name: "三亚", value: 54},
          {name: "自贡", value: 56},
          {name: "吉林", value: 56},
          {name: "阳江", value: 57},
          {name: "泸州", value: 57},
          {name: "西宁", value: 57},
          {name: "宜宾", value: 58},
          {name: "呼和浩特", value: 58},
          {name: "成都", value: 58},
          {name: "大同", value: 58},
          {name: "镇江", value: 59},
          {name: "桂林", value: 59},
          {name: "张家界", value: 59},
          {name: "宜兴", value: 59},
          {name: "北海", value: 60},
          {name: "西安", value: 61},
          {name: "金坛", value: 62},
          {name: "东营", value: 62},
          {name: "牡丹江", value: 63},
          {name: "遵义", value: 63},
          {name: "绍兴", value: 63},
          {name: "扬州", value: 64},
          {name: "常州", value: 64},
          {name: "潍坊", value: 65},
          {name: "重庆", value: 66},
          {name: "台州", value: 67},
          {name: "南京", value: 67},
          {name: "滨州", value: 70},
          {name: "贵阳", value: 71},
          {name: "无锡", value: 71},
          {name: "本溪", value: 71},
          {name: "克拉玛依", value: 72},
          {name: "渭南", value: 72},
          {name: "马鞍山", value: 72},
          {name: "宝鸡", value: 72},
          {name: "焦作", value: 75},
          {name: "句容", value: 75},
          {name: "北京", value: 79},
          {name: "徐州", value: 79},
          {name: "衡水", value: 80},
          {name: "包头", value: 80},
          {name: "绵阳", value: 80},
          {name: "乌鲁木齐", value: 84},
          {name: "枣庄", value: 84},
          {name: "杭州", value: 84},
          {name: "淄博", value: 85},
          {name: "鞍山", value: 86},
          {name: "溧阳", value: 86},
          {name: "库尔勒", value: 86},
          {name: "安阳", value: 90},
          {name: "开封", value: 90},
          {name: "济南", value: 92},
          {name: "德阳", value: 93},
          {name: "温州", value: 95},
          {name: "九江", value: 96},
          {name: "邯郸", value: 98},
          {name: "临安", value: 99},
          {name: "兰州", value: 99},
          {name: "沧州", value: 100},
          {name: "临沂", value: 103},
          {name: "南充", value: 104},
          {name: "天津", value: 105},
          {name: "富阳", value: 106},
          {name: "泰安", value: 112},
          {name: "诸暨", value: 112},
          {name: "郑州", value: 113},
          {name: "哈尔滨", value: 114},
          {name: "聊城", value: 116},
          {name: "芜湖", value: 117},
          {name: "唐山", value: 119},
          {name: "平顶山", value: 119},
          {name: "邢台", value: 119},
          {name: "德州", value: 120},
          {name: "济宁", value: 120},
          {name: "荆州", value: 127},
          {name: "宜昌", value: 130},
          {name: "义乌", value: 132},
          {name: "丽水", value: 133},
          {name: "洛阳", value: 134},
          {name: "秦皇岛", value: 136},
          {name: "株洲", value: 143},
          {name: "石家庄", value: 147},
          {name: "莱芜", value: 148},
          {name: "常德", value: 152},
          {name: "保定", value: 153},
          {name: "湘潭", value: 154},
          {name: "金华", value: 157},
          {name: "岳阳", value: 169},
          {name: "长沙", value: 175},
          {name: "衢州", value: 177},
          {name: "廊坊", value: 193},
          {name: "菏泽", value: 194},
          {name: "合肥", value: 229},
          {name: "武汉", value: 273},
          {name: "大庆", value: 279}
        ];//显示数据

        //重新组装数据
        const convertData = function (data) {
          const res = [];
          for (let i = 0; i < data.length; i++) {
            const geoCoord = geoCoordMap[data[i].name];
            if (geoCoord) {
              res.push({
                name: data[i].name,
                coord: geoCoord,
                //数据要显示，value必须把坐标和值组合在一起,类似下面的格式
                value: geoCoord.concat(data[i].value)
              });
            }
          }
          return res;
        };

        let option = {
          backgroundColor: '#374150',
          title: {
            text: '全国主要城市空气质量',
            subtext: 'data from PM25.in',
            sublink: 'http://www.pm25.in',
            left: 'center',
            textStyle: {
              color: '#fff'
            }
          },
          tooltip: {
            trigger: 'item',
            //鼠标在点上悬停时显示的数据
            formatter: (p) => {
              let dataCon = p.data;
              let txtCon = dataCon.name + ': ' + dataCon.value[2];
              return txtCon;
            },
            textStyle: {
              color: '#ffffff'
            }
          },
          legend: {
            orient: 'vertical',
            top: 'bottom',
            left: 'right',
            data: ['pm2.5'],
            textStyle: {
              color: '#fff'
            }
          },
          visualMap: {
            min: 0,
            max: 300,
            splitNumber: 5,
            color: ['#d94e5d', '#eac736', '#50a3ba'],
            textStyle: {
              color: '#fff'
            }
          },
          geo: {
            map: 'china',
            roam: false,//随机放大缩小移动
            label: {
              emphasis: {
                show: true,
                textStyle: {
                  color: '#d49715'
                }
              }
            },
            itemStyle: {
              normal: {
                areaColor: '#183948',
                borderColor: '#636363'
              },
              emphasis: {
                areaColor: '#2a333d'
              }
            }
          },
          series: [
            {
              name: 'pm2.5',
              type: 'scatter',
              coordinateSystem: 'geo',
              data: convertData(valueDatas),
              symbolSize: 12,
              label: {
                normal: {
                  show: false
                },
                emphasis: {
                  show: false
                }
              },
              itemStyle: {
                emphasis: {
                  borderColor: '#fff',
                  borderWidth: 1
                }
              }
            }
          ]
        };
        myChart.setOption(option)
      }
    }
  }

  //生成随机颜色
  function buildColor(type) {
    let r = Math.floor(Math.random() * 256);
    let g = Math.floor(Math.random() * 256);
    let b = Math.floor(Math.random() * 256);
    let a = Math.floor(Math.random() * 10) / 10.0;

    let color = '';
    if (type == 'rgba') {
      color = 'rgba(' + r + ',' + g + ',' + b + ',' + a + ')';
    } else {
      color = 'rgb(' + r + ',' + g + ',' + b + ')';
    }
    return color;
  }
</script>
